Power creep is going to persist in the game indefinitely. The devs will constantly as new features to the game mechanics that will make squads more and more powerful. Expecting otherwise seems, to me, an exercise in futility. Anything the devs release to alter the meta will end up making the top team(s) stronger.
I do, however, agree that the current status of pvp in the game is very stale. Prior to revan going F2P recently, the team' presence was limited enough that the top arena ranks could still support some variety. Traya and CLS teams were able to climb through to the top of squad arena. I even saw a couple NS/JTR teams hanging out in the top 20 on occasion. Granted, none of them could hold defense as well, but the# of revan teams in the top 50 was limited (think I had 18 or so I'm my shard, bit I knew other guys with 25 or so)
Now that everyone seems to have him, though, no other teams can climb through the top 50, and it has made arena quite boring.
For TW, more people need to rearrange their mods IMO. Like others have said, there are a few squads that can take in revan in offense. If you're placing yours on D, move your arena mods onto CLS rebel team or traya, and use them to take out the enemy revan team. Put your B-team mods on def.revan, help stop most other teams
Either way, We all know something is coming soon to mix things up. the only questions are what, and when